internal Expression(string arg)
: base(null)
{
Build = (buildContext, buildArgs) =>
{
QueryTalkException exception;
var variable = buildContext.TryGetVariable(arg, out exception);
if (variable.IsInliner())
{
if (variable.DT != DT.InExpression)
{
buildContext.TryTakeException(variable.DT.InvalidInlinerException(GetType().Name,
variable.Name, _inliners));
return(null);
}
string arg2 = variable.Name;
if (buildArgs.Executable != null)
{
ParameterArgument argument = buildArgs.Executable.GetInlinerArgument(arg2);
if (argument.Value != null)
{
arg2 = argument.Build(buildContext, buildArgs);
}
else
{
buildContext.TryTakeException(new QueryTalkException(this,
QueryTalkExceptionType.InlinerArgumentNull,
String.Format("{0} = null", arg2)));
return(null);
}
}
return(arg2.ToString());
}
else if (variable.IsConcatenator())
{
buildContext.TryTakeException(InvalidConcatenationException(variable.Name));
return(null);
}
// non-existing variable or expression string
else
{
// note: non-existing variable will pass the test => the server will throw an error
CheckExpressionString(arg);
return(arg);
}
};
}
internal Table(System.String arg)
: base(arg)
{
SetArgType(arg);
Build = (buildContext, buildArgs) =>
{
string sql;
Variable variable = TryGetVariable(buildContext);
if (variable.IsInliner())
{
string arg2 = variable.Name;
if (variable.DT != DT.InTable)
{
buildContext.TryTakeException(variable.DT.InvalidInlinerException(GetType().Name,
arg2, _inliners));
return(null);
}
if (buildArgs.Executable != null)
{
// get param argument
ParameterArgument argument = buildArgs.Executable.GetInlinerArgument(arg2);
if (argument.Value != null)
{
if (argument.Value is System.String)
{
arg2 = Filter.DelimitTableMultiPart((string)argument.Value, out chainException);
}
else if (argument.Value is View)
{
arg2 = Filter.Enclose(arg2);
}
else
{
arg2 = argument.Build(buildContext, buildArgs);
}
}
else
{
buildContext.TryTakeException(new QueryTalkException(this,
QueryTalkExceptionType.InlinerArgumentNull,
String.Format("{0} = null", arg2)));
return(null);
}
}
return(arg2);
}
else
{
if (ProcessVariable(buildContext, buildArgs, out sql, variable))
{
return(sql);
}
// specific (existing) variable checks
if (variable != null && variable.VariableType.IsParamOrSqlVariable())
{
// variable should be a table
if (!variable.DT.IsTable())
{
buildContext.TryTakeException(CreateException(QueryTalkExceptionType.TableVariableMissing, arg));
return(null);
}
// check concatenation with non-udt table variable (NOT ALLOWED)
if (buildContext.Current.Query.Master.IsConcatenated)
{
if (variable.NameType == null)
{
buildContext.TryTakeException(CreateException(QueryTalkExceptionType.TableVariableDisallowed, arg));
return(null);
}
}
}
}
// default
sql = Filter.DelimitMultiPartOrParam(arg, IdentifierType.Table, out chainException);
buildContext.TryTakeException(chainException);
return(sql);
};
}
